159943685 has 16 divisors (see below), whose sum is σ = 209960640. Its totient is φ = 116000640.

The previous prime is 159943681. The next prime is 159943687. The reversal of 159943685 is 586349951.

It is a happy number.

It is not a de Polignac number, because 159943685 - 2² = 159943681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159943681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17009 + ... + 24681.

It is an arithmetic number, because the mean of its divisors is an integer number (13122540).

Almost surely, 2^159943685 is an apocalyptic number.

It is an amenable number.

159943685 is a deficient number, since it is larger than the sum of its proper divisors (50016955).

159943685 is a wasteful number, since it uses less digits than its factorization.

159943685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068.

The product of its digits is 1166400, while the sum is 50.

The square root of 159943685 is about 12646.8843989340. The cubic root of 159943685 is about 542.8198231665.

The spelling of 159943685 in words is "one hundred fifty-nine million, nine hundred forty-three thousand, six hundred eighty-five".